RPS: Have you found the game’s performance takes much of a hit when you turn ray tracing on?
Archard: That’s the trouble, we’re developing it and optimising it. We’ve got an existing engine with the existing systems, so a direct comparison isn’t really fair. Yeah, when you first do it and you implement it in a naïve way, it’s more expensive, it’s slower. But if you optimise, yeah, you can get there. You get it up to frame rate and that’s what we’ve been trying out. Actually saying what the final difference is, I can’t, because we’ve not finished.
RPS: Do you have a rough target in mind?
Archard: We’re always going to be pushing 60[fps], but we’ll see what we get. Obviously, there’s three cards there and we’ll see what profiles we can get for each.
RPS: At 1080p?
Archard: It is 1080p, yes. That’s the goal, but obviously we’ll see how it goes.
RPS: I imagine there will still be a lot of people playing Metro Exodus without an RTX card, though. Is it the case that you’ve now got to effectively cater for two different branches of hardware?
Archard: Realistically, no, I mean it’s still the same engine. We’ve developed it at 4A for years and years and there’s still a whole suite of technology, all of the traditional stuff. The RTX is an extra feature that’s a part of that – it’s another tool in the toolbox sort of thing – but no, the existing engine is still there, it’s still got traditional global illumination and lots of things that still look incredible, and [RTX] is the new thing we’ve recently implemented as a feature. RTX is not an overhaul of the way you develop games in general. It’s something that fits in alongside it. That’s why it’s so great – it goes in nice and easy, takes your existing data and just represents it in another way.
In the office, I’m working on mostly a GTX 970 for many techniques that run smoothly on that, and that’s on high settings, so we – we have a scalable engine. Legacy hardware works great on it, but also at the same time we’re constantly implementing these new features that are tackling the hardware as it’s coming out. 作者: 夏青 时间: 2018-8-26 08:13
